放射 ほうしゃ のう汚染 おせんじゃなかったです
hōshanōosenjanakattadesu

Noun
Desu Copula

The polite, past negative form of 放射能汚染

1. Wasn't radioactive contamination.; Wasn't radiation contamination.

Past/Perfective
Negative
Polite
Casual Register